Responses from one racist criminal (9)
I believe the answer is:
reactions
'responses' is the definition.
('reaction' can be a synonym of 'response')
'one racist criminal' is the wordplay.
'criminal' indicates an anagram.
'one'+'racist'='oneracist'
'oneracist' is an anagram of 'REACTIONS'.
'from' is the link.
(Other definitions for reactions that I've seen before include "Responses, chemical perhaps" , "Mental or physical responses" , "Takes" , "What you may get with chemicals" , "Newton's law of motion says all actions have them" .)